Worth



J. 0. AINSW'ORT-H & R. K. ROBERTS.- Regulating Gas-Trap.

No. 223,573. Patented Jan. 13, 1880.

'LPEI'ERS, PNOTU-LITKOBPAPl iEE-WiSHINGTON. D C4 UNITED STATES PATENT OFFICE.

JOHN C. AINSWORTH, OF BURY, AND ROBERT K. ROBERTS, OF TOTTINGTON, COUNTY OF LANCASTER, GREAT BRITAIN.

REGULATING GAS-TAP.

SPECIFICATION forming part of Letters Patent No. 223,573, dated January 13, 1880. Application filed November 24, 1879.

To all whom it may concern Be it known that we, JOHN CARTER AINS- WORTH, of Bury, in the county of Lancaster, in the Kingdom of Great Britain and Ireland, and ROBERT KNOWLES ROBERTS, of Tottington, in the same county, have invented a new and useful Improvement in Regulating Gas- Taps or Gas-Stop Taps, of which the following is a specification.

The object of our invention is to control and regulate the ,flow of illuminating-gas through service-pipes, with the object of a more regular and economical consumption of such gas. To promote this result we employ and place in connection with such service-pipes a tap of the construction illustrated by the accompanying drawings, of which Figure 1 is a longitudinal section; Fig. 2, a sectional plan; Fig. 3, a cross-section of the tap-passage at the line a b, Fig. 1, while Fig. 4 is a view of a portion of the tap-plug.

The tap is in its main features of the ordinary construction, being fitted with a tapered plug, A, which in taps fitted with our-improvements we prefer to make somewhat larger, in proportion to the diameter of the gas-passage, than is usual. At one side both of the influx and efflux orifices of the plug A tapered grooves or channels 0 c are out, as shown more particularly at Fig. 4, whioh is a view of the effluxorifice C of the plug. These channels come exactly opposite similar channels 01 01, cut in the plug-seating, the said channels 01 61 starting from projections I) D in the tap passage. The effluX-orifice C and channels a and d in the plug and seating we prefer to make a little larger than those at the influx side. ,VVhen the tap is turned full on the gas passes through the plug without being to any great degree deflected or interfered with by the said channels; but when turned partly 01f in the direction of the arrow, Fig. 2, until it assumes a position similar to that shown in the drawby means of the channels in the tortuous manner indicated by the arrows at Fi 3, whereby the head of pressure is reduced. By turning the plug still farther round the area of the channels becomes still more restricted, owing to their tapering form, until, when the plug has performed a full quarter of a turn, the flow of gas becomes completely interrupted. -A stop-peg, 6, projects from the plug A, so as to limit its rotation.

As further means for reducing the pressure and for filtering the'gas, we fix a partition of wire-gauze, E, preferably in the influx-orifice C, as shown, and in order more easily to remove and replace the same we form the plug" A so that a portion, F, may be removed from its side to permit the introduction of the wire-gauze partition E. The removable portion F is or maybe held in position by means of screws G, the heads of which are flush'with the body of the plug.

A similar wiregau'ze partition may also, if desired, be placed in the eftluX-orifice, and any number of such partitions, of any requisite degree of fineness, ma y be employed. It will also be evident that any suitable number of the hereinbet'ore-described tapered channels or grooves may be used.

We claim as our inventionv A gas-tap having a plug and seating provided with corresponding channels 0 c d d on both inlet and outletsides, as and for the purpose set forth.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

JOHN CARTER AINSWORTH. ROBERT KNOWLES ROBERTS.

Witnesses DAVID FULroN,

ARTHUR LEDGER.

ings, the gas finds its Way through the plug j 

